This paper studied the stress corrosion cracking(SCC)of EV31A in 0.1 M Na 2 SO 4 saturated with Mg(OH)2 using linearly increasing stress tests,compared with pure Mg and WE43B.All three materials were susceptible to SC...This paper studied the stress corrosion cracking(SCC)of EV31A in 0.1 M Na 2 SO 4 saturated with Mg(OH)2 using linearly increasing stress tests,compared with pure Mg and WE43B.All three materials were susceptible to SCC.SCC susceptibility increased with decreasing applied stress rate.The threshold stress was 0.3×(yield stress)for pure Mg,0.6×(yield stress)for EV31A,and 0.8×(yield stress)for WE43B.The SCC velocities at an applied stress rate of 7.3×10^(-4)MPa s^(-1)were 7.2×10^(-8)m s^(−1)for pure Mg,5.6×10^(-9)m s^(-1)for WE43B,and 1.5×10^(-9)m s^(-1)for EV31A.展开更多
Long period fiber gratings are emerging as a potential candidate in the list of surrounding refractive index optical fiber sensors. Their sensitivity can be enhanced greatly if the grating period, fiber dimensions and...Long period fiber gratings are emerging as a potential candidate in the list of surrounding refractive index optical fiber sensors. Their sensitivity can be enhanced greatly if the grating period, fiber dimensions and surrounding refractive index are optimized in a way to operate at a point called turn around point on phase matching curves of these gratings. Turn around point LPFGs are well known for their ultrahigh sensitivity to external parameters. Potential of operating LPFG at or near turn around point has been investigated by many researchers in various applications including physical parameter sensing, adulteration detection, radiation dose, etc. Since TAP LPFGs are in investigation phase therefore a lot of rigorous & efficient work in finding techniques for optimizing their potential as sensor in chemical, biochemical, structural health monitoring is still to be carried out. A brief review of work carried out in this domain till now is presented here and key findings from literature review are highlighted.展开更多
基金YL wishes to thank The University of Queensland,the University of Science and Technology Beijing,and China Scholarship Council for their support during his study abroad year.
文摘This paper studied the stress corrosion cracking(SCC)of EV31A in 0.1 M Na 2 SO 4 saturated with Mg(OH)2 using linearly increasing stress tests,compared with pure Mg and WE43B.All three materials were susceptible to SCC.SCC susceptibility increased with decreasing applied stress rate.The threshold stress was 0.3×(yield stress)for pure Mg,0.6×(yield stress)for EV31A,and 0.8×(yield stress)for WE43B.The SCC velocities at an applied stress rate of 7.3×10^(-4)MPa s^(-1)were 7.2×10^(-8)m s^(−1)for pure Mg,5.6×10^(-9)m s^(-1)for WE43B,and 1.5×10^(-9)m s^(-1)for EV31A.
文摘Long period fiber gratings are emerging as a potential candidate in the list of surrounding refractive index optical fiber sensors. Their sensitivity can be enhanced greatly if the grating period, fiber dimensions and surrounding refractive index are optimized in a way to operate at a point called turn around point on phase matching curves of these gratings. Turn around point LPFGs are well known for their ultrahigh sensitivity to external parameters. Potential of operating LPFG at or near turn around point has been investigated by many researchers in various applications including physical parameter sensing, adulteration detection, radiation dose, etc. Since TAP LPFGs are in investigation phase therefore a lot of rigorous & efficient work in finding techniques for optimizing their potential as sensor in chemical, biochemical, structural health monitoring is still to be carried out. A brief review of work carried out in this domain till now is presented here and key findings from literature review are highlighted.
